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Search verified bearing designations and technical parameters across SKF, FAG, INA, TIMKEN, NSK, KOYO, IKO, NACHI and NTN.

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Bearing designation

Closure group

Brand

SKF831INA527FAG489KOYO285TIMKEN178IKO144NSK97NACHI35NTN7EZO2

Product family

Super-precision angular contact ball bearings241Deep groove ball bearings222Radial deep-groove ball129Angular contact ball bearings69Cylindrical roller bearings47Bushings, thrust washers and strips39Inner rings36Deep groove ball bearings35Angular contact ball bearings28Single row deep groove ball bearings26Ts - tapered single26Tapered roller bearings24Rod ends21Self-aligning ball bearings21Shell type needle roller bearings21Axial deep groove ball bearings19Support rollers (yoke-type track rollers)18Cylindrical roller bearings17Radial spherical plain bearings17Machined type needle roller bearings16Radial srb15Spherical roller bearings15Needle roller cages for general use14Super-precision angular contact thrust ball bearings14Inner rings / metric series / jr,im.p,jr.js1,jrz.js113Matched pair / back-to-back / with machined cage12Matched pair / face-to-face / with machined cage12Matched pair / tandem / with machined cage12Single-row / metric series12Single-row / with machined cage12Thin section bearings12Single direction / with flat back faces10Single-row / open type10Thrust ball bearings10Needle roller bearings9Automotive bearings8Matched pair / back-to-back / with pressed cage8Matched pair / face-to-face / with pressed cage8Matched pair / tandem / with pressed cage8Needle roller bearings with separable cage8Self-aligning ball bearings8Separable roller followers8Single-row / with pressed cage8Angular contact ball7Mounting holed type high rigidity crossed roller bearings7Single-row / nu7Single-row / nup7Corrosive / exsev-sk6Non-separable roller followers6Roller bearings6

Detailed product type

Deep groove ball bearings480Angular contact ball bearings207Cylindrical roller bearings120Needle roller bearings103Flanged housing unit87Tapered roller bearings83Radial insert ball bearing70Matched set of two super-precision, high-capacity, d design, single row angular contact ball bearings64Self-aligning ball bearings53Inner rings50Deep groove ball bearing with seals or shields46Plummer block housing units43Axial deep groove ball bearings40Rod ends38Super-precision, high-capacity, universally matchable single row angular contact ball bearing38Spherical plain bearings37High-speed spindle bearings36Special-environment bearings36Spherical roller bearings36Matched set of two super-precision, high-speed e design, single row angular contact ball bearings28Spindle bearings28Ball bearing units26Yoke type track roller26Double row angular contact ball bearing with seals or shields24Drawn cup needle roller bearing open end23Take-up housing unit21Double row angular contact ball bearing19Linear ball bearing19Deep groove ball bearing with seals18Roller followers18Single row angular contact ball bearing18Automotive bearings17Axial angular contact ball bearing17Matched set of two super-precision, high-speed e design, single row angular contact ball bearings with seals17Single row cylindrical roller bearing, nj design17Single row cylindrical roller bearing, nu design17Bush16Single row tapered roller bearing16Super-precision, high-speed e design, universally matchable single row angular contact ball bearing16Needle roller cage assembly15Super-precision, high-capacity, single row angular contact ball bearing14Matched set of three super-precision, high-capacity, d design, single row angular contact ball bearings13Stainless steel deep groove ball bearing with integral sealing13Super-precision, high-capacity, universally matchable single row angular contact ball bearing with seals13Crossed roller bearings11Combined needle roller bearings10Inner ring for needle roller bearings, ir series10Needle roller/axial cylindrical roller bearing10Special ball bearing with integral sealing10Super-precision, high speed, e design, universally matchable single row angular contact ball bearing with seals10Sintered bronze straight bushing9Skf deep groove ball bearing for highly contaminated environments9Adapter sleeves8Deep groove ball bearing for high temperature applications with shields on both sides8Axial needle roller bearings7Radial roller bearing7Radial spherical plain bearing, maintenance-free, metric sizes7Super-precision single direction angular contact thrust ball bearing7Deep groove ball bearing with snap ring and integral sealing6Four-point contact bearing6

Bearing dimensions

Minimum and maximum (mm)

Inside d

Outside D

Width B

Height H

Technical attributes

Series

62056763053960053420026320522620022330518600018630018720517GE2514KT14730512220511302051130010RAE2510TLA10EX268659LRT922205823058IRT8322057323057332057619057E257GRAE257NA4905707000691006EX271366GYE256NART6NAST6120551305530305532005532005X5620005GE25-DO5GLCTE255NKI25/205RNA49045S62055SL0450055TA5ZKLF2575516005461805470054B70054B719054B72054CRBFV4CRBH4HC62054HCB70054

Sealing2RS vs ZZ selection guide →

Without450Seal on both sides189Without — Not sealed127Open103Sealed72Shield on both sides602Z — Non-contact shield on both sides592HRS — Contact seal on both sides512RSR — Contact seal on both sides30Shielded302RSD — Non-contact sealed on both sides and greased “for life”24Shield on one side192RS — Contact seal on both sides13Seal on one side10Shielded ZZ82BRS — Non-contact seal on both sides7HRS — Contact seal on one side7Z — Non-contact shield on one Side7Contact sealed6Non-contact sealed6Metal shields on both sides5Non-contact rubber seals on both sides5One contact seal5One non-contact seal5One shield5Two contact seals5Two non-contact seals5Two shields5Contact rubber seals on both sides4Extremely light contact sealed42RSR — Seals on both sides, normal temperature3contact seal on one side32RS — Contact lip seals on both sides2Double contact sealed (DDU)2Double shielded (ZZ)2RSO — Contact seal on one side for O-arrengment2Sealed 2RS2Sealed type22RSD — Non-contact seal on both sides12Z — Minimal gap seal on both sides1

Internal clearance

CN190CN (Group N) — Normal internal clearance127C3110C3 (Group 3) — Internal clearance larger than CN103C413C4 (Group 4) — Internal clearance larger than C313Between C2 and CN12Multiples of C511C2 (Group 2) — Internal clearance smaller than CN5CM (Group M) — Internal clearance limited for electric motors5C12C22C52Not applicable2C3M1NSTD1

Precision class

PN — Normal (ISO 492:2023)179P6 — Class 6 (ISO 492:2023)172JIS, Class 097P4S — Tolerance class P4S, FAG standard better than P4 to ISO 492:202360P6 and tighter width tolerance40P622Normal17ABMA Class K16P6X — Class 6X (ISO 492:2023)11P5 — Class 5 (ISO 492:2023)8ABMA Class 25P4 — Class 4 (ISO 492:2023)4ABMA Class N1

Cage

Sheet metal229JN — Steel sheet metal166Steel cage162Non-metallic115T — Laminated fabric cage60TVH — Solid cage made of glass-fiber reinforced polyamide PA6657Steel48Pressed steel40Standard — Sheet steel cage, window cage, roller-guided40TVP — Solid cage made of glass-fiber reinforced polyamid PA6624Low Carbon Steel21Machined brass19TVP2 — Solid Window Cage made from PA6618JP — Steel sheet metal17Stamped stainless steel17Carbon Steel14M1 — Two Piece Brass Cage Roller Guided13With13Without13Brass or non-metallic composite12JH — Steel sheet metal12JPA — Sheet metal cage11TVH — Solid cage made of glass-fiber reinforced polyamid PA6611Full Complement10TVP — Plastic cage8MP — Solid brass cage, ball guided7Stainless Steel cage7Brass sheet metal6Polyamide 666MPA — Solid brass cage, outer ring guided5pressed steel cage5TVP — Polyamide cage4Standard — Polyamide cage3Brass cage2Machined metal2Nylon cage2Polyamide 46 resin2Pressed stainless steel2Sheet steel2Stainless Steel2

Bearing material

Bearing steel477Hybrid (ceramic balls)100High Carbon Chrome Steel78Chromium Molybdenum Steel21Stainless steel21High Carbon Chromium Bearing Steel18Carbon Steel17GG — Grey cast iron16High temperature steel11Copper or Brass2High-carbon chromium bearing steel2High Carbon Steel1Steel1

Lubricant

None426Grease220Without — Bearing not greased112GA14 — Ball bearing grease, low noise41Lubricating grease36GA13 — Ball bearing and insert bearing grease23L038 — Grease (L038/customer specific)21GA21 — Grease for super precision bearings, standard16Solid lubricant11L138 — Grease (L138/customer specific)9L207 — Low noise high-temperature grease, interchangeable with grease L0699Food grade grease6L069 — Low noise high-temperature grease, interchangeable with grease L2076Solid Oil6L100 — Grease (L100/customer specific)5L285 — Grease (L285/customer specific)5Without — Not greased5FD — Grease with food application approval to NSF H13L055 — Grease (L055/customer specific)2L055 — Greased with Arcanol MULTITOP (L055)2L140 — Grease (L140/customer specific)2L195 — Grease (L195/customer specific)2L408 — Grease (L408/customer specific)2L091 — Grease (L091/customer specific)1L114 — Grease (L114/customer specific)1L178 — Grease (L178/customer specific)1L506 — Grease (L506/customer specific)1

Performance

Dynamic load ≥ kN

Static load ≥ kN

Limit speed ≥ r/min

Mass ≤ kg

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